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這篇文章主要介紹了Dom4j如何解析xml復雜多節點報文，具有一定借鑒價值，感興趣的朋友可以參考下，希望大家閱讀完這篇文章之后大有收獲，下面讓小編帶著大家一起了解一下。
XML是一種通用的數據交換格式,它的平臺無關性、語言無關性、系統無關性、給數據集成與交互帶來了極大的方便。XML在不同的語言環境中解析方式都是一樣的,只不過實現的語法不同而已。
1、DOM解析
2、SAX解析
3、JDOM解析
4、DOM4J解析
其中前兩種屬于基礎方法，是官方提供的平臺無關的解析方式；后兩種屬于擴展方法，它們是在基礎的方法上擴展出來的，只適用于java平臺。
依賴jar包：
<dependency> <groupId>dom4j</groupId> <artifactId>dom4j</artifactId> <version>1.6.1</version> </dependency>
xml報文如下：
<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <Root> <SttlCntNb>2</SttlCntNb> <DebitCntAmt>CNY0.00</DebitCntAmt> <CreditCntAmt>CNY4700.00</CreditCntAmt> <SttlList> <SttlInf> <SttlReptFlg>2018052500170139</SttlReptFlg> <SttlDCFlg>2</SttlDCFlg> <SttlAmt>CNY100.00</SttlAmt> <BatchList> <BatchInf> <BatchId>B201805230015</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY100.00</BatchNetAmt> <SubItemList> <SubItemInf>0113|C3228644000018|04|CNY0.00|0|CNY5.00|1|</SubItemInf> <SubItemInf>0120|C3228640000020|05|CNY50.00|1|CNY0.00|0|</SubItemInf> <SubItemInf>0114|C3228640000029|07|CNY0.00|0|CNY5.00|1|</SubItemInf> <SubItemInf>0115|C3228640000019|06|CNY0.00|0|CNY5.00|1|</SubItemInf> <SubItemInf>0111|C3228640000016|03|CNY0.00|0|CNY10.00|1|</SubItemInf> <SubItemInf>0110|C3228644000016|01|CNY0.00|0|CNY110.00|1|</SubItemInf> <SubItemInf>0112|C3228644000017|99|CNY0.00|0|CNY5.00|1|</SubItemInf> <SubItemInf>0110|C3228644000016|02|CNY0.00|0|CNY10.00|1|</SubItemInf> </SubItemList> </BatchInf> </BatchList> </SttlInf> <SttlInf> <SttlReptFlg>2018052500170138</SttlReptFlg> <SttlDCFlg>2</SttlDCFlg> <SttlAmt>CNY4600.00</SttlAmt> <BatchList> <BatchInf> <BatchId>B201805240001</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY400.00</BatchNetAmt> <SubItemList> <SubItemInf>0126|C1010511003703|00|CNY0.00|4|CNY0.00|0|</SubItemInf> <SubItemInf>0125|C1010211000012|01|CNY0.00|8|CNY0.00|0|</SubItemInf> <SubItemInf>0126|C1010211000012|01|CNY0.00|8|CNY0.00|0|</SubItemInf> <SubItemInf>0124|C1010211000012|01|CNY0.00|8|CNY0.00|0|</SubItemInf> <SubItemInf>0123|C1010211000012|01|CNY0.00|4|CNY0.00|0|</SubItemInf> <SubItemInf>0110|C1010211000012|01|CNY0.00|0|CNY400.00|2|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240002</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY400.00</BatchNetAmt> <SubItemList> <SubItemInf>0125|C1010211000012|00|CNY400.00|4|CNY0.00|0|</SubItemInf> <SubItemInf>0110|C1010211000012|00|CNY0.00|0|CNY800.00|2|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240003</BatchId> <BatchDCFlg>1</BatchDCFlg> <BatchNetAmt>CNY0.00</BatchNetAmt> <SubItemList> <SubItemInf>0120|C1010211000012|00|CNY0.00|4|CNY0.00|0|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240004</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY1200.00</BatchNetAmt> <SubItemList> <SubItemInf>0112|C1010211000012|01|CNY0.00|0|CNY1200.00|2|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240005</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY400.00</BatchNetAmt> <SubItemList> <SubItemInf>0113|C1010211000012|00|CNY0.00|0|CNY400.00|4|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240006</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY400.00</BatchNetAmt> <SubItemList> <SubItemInf>0114|C1010211000012|00|CNY0.00|0|CNY400.00|4|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240007</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY200.00</BatchNetAmt> <SubItemList> <SubItemInf>0115|C1010211000012|01|CNY0.00|0|CNY200.00|2|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240008</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY600.00</BatchNetAmt> <SubItemList> <SubItemInf>0115|C1010211000012|01|CNY0.00|0|CNY600.00|2|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240009</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY400.00</BatchNetAmt> <SubItemList> <SubItemInf>0110|C1010511003703|00|CNY0.00|0|CNY400.00|2|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240010</BatchId> <BatchDCFlg>2</BatchDCFlg> <BatchNetAmt>CNY1200.00</BatchNetAmt> <SubItemList> <SubItemInf>0111|C1010211000012|01|CNY0.00|0|CNY1200.00|4|</SubItemInf> </SubItemList> </BatchInf> <BatchInf> <BatchId>B201805240012</BatchId> <BatchDCFlg>1</BatchDCFlg> <BatchNetAmt>CNY1200.00</BatchNetAmt> <SubItemList> <SubItemInf>0116|C1010511003703|00|CNY1200.00|4|CNY0.00|0|</SubItemInf> </SubItemList> </BatchInf> </BatchList> </SttlInf> </SttlList> </Root>
String saveFile 為本地保存xml報文的路徑。
AccountInfoEntityResp 為解析xml后封裝的obj實體對象。
/**
* 解析xml文件并
*/
public String Dom4jGetXML(String saveFile){
//返回的Entity對象
String xmlContents = new String();
// 創建SAXReader的對象reader
SAXReader reader = new SAXReader();
try {
// Resource resource = new ClassPathResource("accountInfo/"+accountDate+".xml");
Resource resource = new ClassPathResource(saveFile);
File file = null;
try{
file = resource.getFile();
}catch (Exception e){
//拋出異常
}
// 通過reader對象的read方法加載books.xml文件,獲取docuemnt對象。
Document document = reader.read(file);
// 通過document對象獲取根節點bookstore
Element rootElement = document.getRootElement();
//document轉換為String字符串
xmlContents = document.asXML();
//解析xml文件并轉換為obj
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return xmlContents;
}/**
* 解析對賬文件xml，轉換為obj對象返回前段
* @Descriptions: 循環遍歷所有子節點,保存每個節點的值
* @Return: AccountInfoEntity
*/
public AccountInfoEntityResp getNodes(Element node){
AccountInfoEntityResp accountInfoEntityResp = new AccountInfoEntityResp();
List<SttlInf> SttlList = new ArrayList<SttlInf>();
//獲得指定節點下面的子節點，首先要知道自己要操作的節點。
Element SttlCntNbElem = node.element("SttlCntNb");
//獲取SttlCntNb
String SttlCntNb = SttlCntNbElem.getTextTrim();
//獲取DebitCntAmt
Element DebitCntAmtElem = node.element("DebitCntAmt");
String DebitCntAmt = DebitCntAmtElem.getTextTrim();
//獲取CreditCntAmt
Element CreditCntAmtElem = node.element("CreditCntAmt");
String CreditCntAmt = CreditCntAmtElem.getTextTrim();
accountInfoEntityResp.setSttlCntNb(Integer.valueOf(SttlCntNb));
BigDecimal CreditCntAmtVal = null;
if(CreditCntAmt != null && !CreditCntAmt.isEmpty()){
CreditCntAmtVal = new BigDecimal(CreditCntAmt.replace("CNY", ""));
}
accountInfoEntityResp.setCreditCntAmt(CreditCntAmtVal);
BigDecimal DebitCntAmtval = null;
if(DebitCntAmt != null && !DebitCntAmt.isEmpty()){
DebitCntAmtval = new BigDecimal(DebitCntAmt.replace("CNY", ""));
}
accountInfoEntityResp.setDebitCntAmt(DebitCntAmtval);
//獲取SttlList
Element SttlListEle = node.element("SttlList");
//獲取SttlInf
Element SttlInfEle = SttlListEle.element("SttlInf");
List<Element> SttlInfList = SttlListEle.elements();
//遍歷SttlInfList節點
String SttlReptFlg = "";
Integer SttlDCFlg = null;
BigDecimal SttlAmt = null;
for(Element e : SttlInfList){
List<BatchInf> BatchList = new ArrayList<BatchInf>();
SttlInf sttlInf = new SttlInf();
//SttlInf下的子節點
Element SttlReptFlgEle = e.element("SttlReptFlg");
SttlReptFlg = SttlReptFlgEle.getTextTrim();
Element SttlDCFlgEle = e.element("SttlDCFlg");
SttlDCFlg = Integer.valueOf(SttlDCFlgEle.getTextTrim());
Element SttlAmtEle = e.element("SttlAmt");
SttlAmt = new BigDecimal(SttlAmtEle.getTextTrim().replace("CNY", ""));
//設值
sttlInf.setSttlAmt(SttlAmt);
sttlInf.setSttlDCFlg(SttlDCFlg);
sttlInf.setSttlReptFlg(SttlReptFlg);
//獲取BatchList節點
Element BatchListEle = e.element("BatchList");
//獲取BatchInf
List<Element> BatchInfList = BatchListEle.elements();
for(Element e2 : BatchInfList){
List<SubItemInf> SubItemList = new ArrayList<SubItemInf>();
BatchInf batchInf = new BatchInf();
String BatchId = "";
Integer BatchDCFlg = null;
BigDecimal BatchNetAmt = null;
Element BatchIdEle = e2.element("BatchId");
BatchId = BatchIdEle.getTextTrim();
Element BatchDCFlgEle = e2.element("BatchDCFlg");
BatchDCFlg = Integer.valueOf(BatchDCFlgEle.getTextTrim());
Element BatchNetAmtEle = e2.element("BatchNetAmt");
BatchNetAmt = new BigDecimal(BatchNetAmtEle.getTextTrim().replace("CNY", ""));
batchInf.setBatchDCFlg(BatchDCFlg);
batchInf.setBatchId(BatchId);
batchInf.setBatchNetAmt(BatchNetAmt);
//獲取SubItemList節點
Element SubItemListEle = e2.element("SubItemList");
//獲取BatchInf
List<Element> SubItemInfList = SubItemListEle.elements();
for(Element e3 : SubItemInfList){
SubItemInf subItemInf = new SubItemInf();
String subItem = "";
subItem = e3.getTextTrim().replace("CNY", "");
subItemInf.setSubItemInf(subItem);
SubItemList.add(subItemInf);
}
batchInf.setSubItemList(SubItemList);
BatchList.add(batchInf);
}
sttlInf.setBatchList(BatchList);
SttlList.add(sttlInf);
}
accountInfoEntityResp.setSttlList(SttlList);
return accountInfoEntityResp;
}package com.bessky.hrmis.test;
import java.util.Iterator;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
public class Dom4JDemo {
public static void main(String[] args) throws Exception {
// 1.創建Reader對象
SAXReader reader = new SAXReader();
String str = "<cas:serviceResponse xmlns:cas='http://www.yale.edu/tp/cas'>\r\n"
+ " <cas:authenticationSuccess>\r\n" + " <cas:user>hanke_tom</cas:user>\r\n"
+ " <cas:attributes>\r\n"
+ " <cas:credentialType>tom</cas:credentialType>\r\n"
+ " <cas:logout_url>http://192.168.1.5:8080/sso/logout</cas:logout_url>\r\n"
+ " <cas:isFromNewLogin>false</cas:isFromNewLogin>\r\n"
+ " <cas:authenticationDate>2019-11-26T17:47:55.789+08:00[Asia/Shanghai]</cas:authenticationDate>\r\n"
+ " <cas:user_id>01</cas:user_id>\r\n"
+ " <cas:authenticationMethod>TomAuthenticationHandler</cas:authenticationMethod>\r\n"
+ " <cas:successfulAuthenticationHandlers>TomAuthenticationHandler</cas:successfulAuthenticationHandlers>\r\n"
+ " <cas:name>張三</cas:name>\r\n"
+ " <cas:longTermAuthenticationRequestTokenUsed>false</cas:longTermAuthenticationRequestTokenUsed>\r\n"
+ " <cas:job_number>00001</cas:job_number>\r\n"
+ " <cas:username>hanke_tom</cas:username>\r\n" + " </cas:attributes>\r\n"
+ " </cas:authenticationSuccess>\r\n" + "</cas:serviceResponse>";
// 2.加載xml
Document document = DocumentHelper.parseText(str);
// 3.獲取根節點
Element rootElement = document.getRootElement();
Iterator iterator = rootElement.elementIterator();
System.out.println("根節點：" + rootElement.getName()); // 拿到根節點的名稱
Iterator bbbb = rootElement.elementIterator("authenticationSuccess");
while (bbbb.hasNext()) {
Element recordEless = (Element) bbbb.next();
Iterator cccc = recordEless.elementIterator("attributes");
while (cccc.hasNext()) {
Element itemEle = (Element) cccc.next();
String username = itemEle.elementTextTrim("job_number");
System.err.println("---------"+username);
}
}
}
}如果后面還有子級繼續while向下取數據
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